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Simplify probCutCount away

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Simplify away the limitation in number of moves in probCut.

STC:
LLR: 2.96 (-2.94,2.94) <-2.50,0.50>
Total: 286768 W: 71888 L: 72133 D: 142747
Ptnml(0-2): 983, 33084, 75471, 32887, 959
https://tests.stockfishchess.org/tests/view/616c9b9b90e1312a3cd0ef0a

LTC:
LLR: 2.95 (-2.94,2.94) <-2.50,0.50>
Total: 69312 W: 17243 L: 17176 D: 34893
Ptnml(0-2): 42, 7452, 19614, 7493, 55
https://tests.stockfishchess.org/tests/view/616cebbf4f95b438f7a85f93

closes https://github.com/official-stockfish/Stockfish/pull/3745

bench: 5005810
This commit is contained in:
bmc4
2021-10-18 09:03:12 -03:00
committed by Stéphane Nicolet
parent f7494961de
commit 67d0616483
1 changed files with 1 additions and 4 deletions
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5
src/search.cpp
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@@ -893,19 +893,16 @@ namespace {
assert(probCutBeta < VALUE_INFINITE); assert(probCutBeta < VALUE_INFINITE);
MovePicker mp(pos, ttMove, probCutBeta - ss->staticEval, &captureHistory); MovePicker mp(pos, ttMove, probCutBeta - ss->staticEval, &captureHistory);
int probCutCount = 0;
bool ttPv = ss->ttPv; bool ttPv = ss->ttPv;
ss->ttPv = false; ss->ttPv = false;
while ( (move = mp.next_move()) != MOVE_NONE while ((move = mp.next_move()) != MOVE_NONE)
&& probCutCount < 2 + 2 * cutNode)
if (move != excludedMove && pos.legal(move)) if (move != excludedMove && pos.legal(move))
{ {
assert(pos.capture_or_promotion(move)); assert(pos.capture_or_promotion(move));
assert(depth >= 5); assert(depth >= 5);
captureOrPromotion = true; captureOrPromotion = true;
probCutCount++;
ss->currentMove = move; ss->currentMove = move;
ss->continuationHistory = &thisThread->continuationHistory[ss->inCheck] ss->continuationHistory = &thisThread->continuationHistory[ss->inCheck]